rectangularWall: Fix placement for ignore_widths 6

we need to move for the edge margin every time. Otherwise the edge will
stick out.

boxes/__init__.py

@@ -2357,7 +2357,6 @@ class Boxes:
 
         if 7 not in ignore_widths:
             self.moveTo(edges[-1].spacing())
-        if 6 not in ignore_widths:
         self.moveTo(0, edges[0].margin())
         for i, l in enumerate((x, y, x, y)):
             self.cc(callback, i, y=edges[i].startwidth() + self.burn)